예제 #1
0
파일: Sym.cpp 프로젝트: Cellule/ChakraCore
// StackSym::GetIntConstValue
int32
StackSym::GetIntConstValue() const
{
    Assert(this->IsIntConst());
    IR::Instr *defInstr = this->m_instrDef;
    IR::Opnd *src1 = defInstr->GetSrc1();

    if (src1->IsIntConstOpnd())
    {
        Assert(defInstr->m_opcode == Js::OpCode::Ld_I4 || defInstr->m_opcode == Js::OpCode::LdC_A_I4 || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn || LowererMD::IsAssign(defInstr));
        return src1->AsIntConstOpnd()->AsInt32();
    }

    if (src1->IsAddrOpnd())
    {
        Assert(defInstr->m_opcode == Js::OpCode::Ld_A || LowererMD::IsAssign(defInstr) || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn);
        IR::AddrOpnd *addr = src1->AsAddrOpnd();
        Assert(addr->IsVar());
        Js::Var var = src1->AsAddrOpnd()->m_address;
        if (Js::TaggedInt::Is(var))
        {
            return Js::TaggedInt::ToInt32(var);
        }
        int32 value;
        const bool isInt32 = Js::JavascriptNumber::TryGetInt32Value(Js::JavascriptNumber::GetValue(var), &value);
        Assert(isInt32);
        return value;
    }
    Assert(src1->IsRegOpnd());
    return src1->AsRegOpnd()->m_sym->GetIntConstValue();
}
예제 #2
0
파일: Sym.cpp 프로젝트: Cellule/ChakraCore
BailoutConstantValue StackSym::GetConstValueForBailout() const
{
    Assert(this->IsConst());
    IR::Instr *defInstr = this->m_instrDef;
    IR::Opnd *src1 = defInstr->GetSrc1();

    return src1->GetConstValue();
}
예제 #3
0
파일: Sym.cpp 프로젝트: Cellule/ChakraCore
IR::Opnd *
StackSym::GetConstOpnd() const
{
    Assert(IsConst());
    IR::Instr *defInstr = this->m_instrDef;
    IR::Opnd *src1 = defInstr->GetSrc1();
    if (!src1)
    {
#if defined(_M_IX86) || defined(_M_X64)
        Assert(defInstr->m_opcode == Js::OpCode::MOVSD_ZERO);
#else
        Assert(UNREACHED);
#endif
    }
    else if (src1->IsIntConstOpnd())
    {
        Assert(this->IsIntConst());
        if (defInstr->m_opcode == Js::OpCode::LdC_A_I4)
        {
            src1 = IR::AddrOpnd::NewFromNumber(src1->AsIntConstOpnd()->GetValue(), defInstr->m_func);
            defInstr->ReplaceSrc1(src1);
            defInstr->m_opcode = Js::OpCode::Ld_A;
        }
        else
        {
            Assert(defInstr->m_opcode == Js::OpCode::Ld_I4 || LowererMD::IsAssign(defInstr) || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn);
        }
    }
    else if (src1->IsFloatConstOpnd())
    {
        Assert(this->IsFloatConst());
        Assert(defInstr->m_opcode == Js::OpCode::LdC_A_R8);

        src1 = src1->AsFloatConstOpnd()->GetAddrOpnd(defInstr->m_func);
        defInstr->ReplaceSrc1(src1);
        defInstr->m_opcode = Js::OpCode::Ld_A;

    }
    else if (src1->IsAddrOpnd())
    {
        Assert(defInstr->m_opcode == Js::OpCode::Ld_A || LowererMD::IsAssign(defInstr) || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn);
    }
    else if (src1->IsMemRefOpnd())
    {
        Assert(this->IsFloatConst() || this->IsSimd128Const());
    }
    else
    {
        AssertMsg(UNREACHED, "Invalid const value");
    }
    return src1;
}
예제 #4
0
파일: Sym.cpp 프로젝트: Cellule/ChakraCore
Js::Var StackSym::GetFloatConstValueAsVar_PostGlobOpt() const
{
    Assert(this->IsConst());
    IR::Instr *defInstr = this->m_instrDef;
    IR::Opnd *src1 = defInstr->GetSrc1();

    StackSym * stackSym = nullptr;

    if (src1->IsRegOpnd())
    {
        stackSym = src1->AsRegOpnd()->m_sym;
        Assert(!stackSym->m_isEncodedConstant);
        if (stackSym->m_isSingleDef)
        {
            //In ARM constant load is always legalized. Try to get the constant from src def
            defInstr = stackSym->m_instrDef;
            src1 = defInstr->GetSrc1();
        }
    }

    Assert(this->IsFloatConst() || (stackSym && stackSym->IsFloatConst()));

    IR::AddrOpnd *addrOpnd;
    if (src1->IsAddrOpnd())
    {
        Assert(defInstr->m_opcode == Js::OpCode::Ld_A);
        addrOpnd = src1->AsAddrOpnd();
    }
    else
    {
        Assert(src1->IsFloatConstOpnd());
        Assert(defInstr->m_opcode == Js::OpCode::LdC_A_R8);

        addrOpnd = src1->AsFloatConstOpnd()->GetAddrOpnd(defInstr->m_func);

        // This is just to prevent creating multiple numbers when the sym is used multiple times. We can only do this
        // post-GlobOpt, as otherwise it violates some invariants assumed in GlobOpt.
        defInstr->ReplaceSrc1(addrOpnd);
        defInstr->m_opcode = Js::OpCode::Ld_A;
    }

    const Js::Var address = addrOpnd->m_address;
    Assert(Js::JavascriptNumber::Is(address));
    return address;
}
예제 #5
0
void
SwitchIRBuilder::FixUpMultiBrJumpTable(IR::MultiBranchInstr * multiBranchInstr, uint32 targetOffset)
{
    multiBranchInstr->FixMultiBrDefaultTarget(targetOffset);

    uint32 offset = multiBranchInstr->GetByteCodeOffset();

    IR::Instr * subInstr = multiBranchInstr->GetPrevRealInstr();
    IR::Instr * upperBoundCheckInstr = subInstr->GetPrevRealInstr();
    IR::Instr * lowerBoundCheckInstr = upperBoundCheckInstr->GetPrevRealInstr();

    AssertMsg(subInstr->m_opcode == m_subOp, "Missing Offset Calculation instruction");
    AssertMsg(upperBoundCheckInstr->IsBranchInstr() && lowerBoundCheckInstr->IsBranchInstr(), "Invalid boundary check instructions");
    AssertMsg(upperBoundCheckInstr->m_opcode == m_gtOp && lowerBoundCheckInstr->m_opcode == m_ltOp, "Invalid boundary check instructions");

    m_adapter->CreateRelocRecord(upperBoundCheckInstr->AsBranchInstr(), offset, targetOffset, true);
    m_adapter->CreateRelocRecord(lowerBoundCheckInstr->AsBranchInstr(), offset, targetOffset, true);
}
예제 #6
0
파일: Sym.cpp 프로젝트: Cellule/ChakraCore
void *StackSym::GetConstAddress() const
{
    Assert(this->IsConst());
    IR::Instr *defInstr = this->m_instrDef;
    IR::Opnd *src1 = defInstr->GetSrc1();

    StackSym * stackSym = nullptr;

    if (src1->IsRegOpnd())
    {
        stackSym = src1->AsRegOpnd()->m_sym;
        Assert(!stackSym->m_isEncodedConstant);
        if (stackSym->m_isSingleDef)
        {
            //In ARM constant load is always legalized. Try to get the constant from src def
            defInstr = stackSym->m_instrDef;
            src1 = defInstr->GetSrc1();
        }
    }

    Assert(src1->IsAddrOpnd());
    Assert(defInstr->m_opcode == Js::OpCode::Ld_A || defInstr->m_opcode == Js::OpCode::LdStr || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn || LowererMD::IsAssign(defInstr));
    return src1->AsAddrOpnd()->m_address;
}
예제 #7
0
bool
GlobOpt::Simd128DoTypeSpec(IR::Instr *instr, const Value *src1Val, const Value *src2Val, const Value *dstVal)
{
    bool doTypeSpec = true;

    // TODO: Some operations require additional opnd constraints (e.g. shuffle/swizzle).
    if (Js::IsSimd128Opcode(instr->m_opcode))
    {
        ThreadContext::SimdFuncSignature simdFuncSignature;
        instr->m_func->GetScriptContext()->GetThreadContext()->GetSimdFuncSignatureFromOpcode(instr->m_opcode, simdFuncSignature);
        if (!simdFuncSignature.valid)
        {
            // not implemented yet.
            return false;
        }
        // special handling for Load/Store
        if (Js::IsSimd128Load(instr->m_opcode) || Js::IsSimd128Store(instr->m_opcode))
        {
            return Simd128DoTypeSpecLoadStore(instr, src1Val, src2Val, dstVal, &simdFuncSignature);
        }

        const uint argCount = simdFuncSignature.argCount;
        switch (argCount)
        {
        case 2:
            Assert(src2Val);
            doTypeSpec = doTypeSpec && Simd128CanTypeSpecOpnd(src2Val->GetValueInfo()->Type(), simdFuncSignature.args[1]) && Simd128ValidateIfLaneIndex(instr, instr->GetSrc2(), 1);
            // fall-through
        case 1:
            Assert(src1Val);
            doTypeSpec = doTypeSpec && Simd128CanTypeSpecOpnd(src1Val->GetValueInfo()->Type(), simdFuncSignature.args[0]) && Simd128ValidateIfLaneIndex(instr, instr->GetSrc1(), 0);
            break;
        default:
        {
            // extended args
            Assert(argCount > 2);
            // Check if all args have been type specialized.

            int arg = argCount - 1;
            IR::Instr * eaInstr = GetExtendedArg(instr);

            while (arg>=0)
            {
                Assert(eaInstr);
                Assert(eaInstr->m_opcode == Js::OpCode::ExtendArg_A);

                ValueType expectedType = simdFuncSignature.args[arg];
                IR::Opnd * opnd = eaInstr->GetSrc1();
                StackSym * sym = opnd->GetStackSym();

                // In Forward Prepass: Check liveness through liveness bits, not IR type, since in prepass no actual type-spec happens.
                // In the Forward Pass: Check IRType since Sym can be null, because of const prop.
                if (expectedType.IsSimd128Float32x4())
                {
                    if (sym && !IsSimd128F4TypeSpecialized(sym, &currentBlock->globOptData) ||
                        !sym && opnd->GetType() != TySimd128F4)
                    {
                        return false;
                    }
                }
                else if (expectedType.IsSimd128Int32x4())
                {
                    if (sym && !IsSimd128I4TypeSpecialized(sym, &currentBlock->globOptData) ||
                        !sym && opnd->GetType() != TySimd128I4)
                    {
                        return false;
                    }
                }
                else if (expectedType.IsFloat())
                {
                    if (sym && !IsFloat64TypeSpecialized(sym, &currentBlock->globOptData) ||
                        !sym&& opnd->GetType() != TyFloat64)
                    {
                        return false;
                    }

                }
                else if (expectedType.IsInt())
                {
                    if ((sym && !IsInt32TypeSpecialized(sym, &currentBlock->globOptData) && !currentBlock->globOptData.liveLossyInt32Syms->Test(sym->m_id)) ||
                        !sym && opnd->GetType() != TyInt32)
                    {
                        return false;
                    }
                    // Extra check if arg is a lane index
                    if (!Simd128ValidateIfLaneIndex(instr, opnd, arg))
                    {
                        return false;
                    }
                }
                else
                {
                    Assert(UNREACHED);
                }

                eaInstr = GetExtendedArg(eaInstr);
                arg--;
            }
            // all args are type-spec'd
            doTypeSpec = true;
        }
        }
    }
    else
    {
        Assert(instr->m_opcode == Js::OpCode::ExtendArg_A);
        // For ExtendArg, the expected type is encoded in the dst(link) operand.
        doTypeSpec = doTypeSpec && Simd128CanTypeSpecOpnd(src1Val->GetValueInfo()->Type(), instr->GetDst()->GetValueType());
    }

    return doTypeSpec;
}
예제 #8
0
/*
Handles all Simd128 type-spec of an instr, if possible.
*/
bool
GlobOpt::TypeSpecializeSimd128(
IR::Instr *instr,
Value **pSrc1Val,
Value **pSrc2Val,
Value **pDstVal
)
{
    if (this->GetIsAsmJSFunc() || SIMD128_TYPE_SPEC_FLAG == false)
    {
        // no type-spec for ASMJS code or flag is off.
        return false;
    }

    switch (instr->m_opcode)
    {
    case Js::OpCode::ArgOut_A_InlineBuiltIn:
        if (instr->GetSrc1()->IsRegOpnd())
        {
            StackSym *sym = instr->GetSrc1()->AsRegOpnd()->m_sym;
            if (IsSimd128TypeSpecialized(sym, this->currentBlock))
            {
                ValueType valueType = (*pSrc1Val)->GetValueInfo()->Type();
                Assert(valueType.IsSimd128());
                ToTypeSpecUse(instr, instr->GetSrc1(), this->currentBlock, *pSrc1Val, nullptr, GetIRTypeFromValueType(valueType), GetBailOutKindFromValueType(valueType));

                return true;
            }
        }
        return false;

    case Js::OpCode::Ld_A:
        if (instr->GetSrc1()->IsRegOpnd())
        {
            StackSym *sym = instr->GetSrc1()->AsRegOpnd()->m_sym;
            IRType type = TyIllegal;
            if (IsSimd128F4TypeSpecialized(sym, this->currentBlock))
            {
                type = TySimd128F4;
            }
            else if (IsSimd128I4TypeSpecialized(sym, this->currentBlock))
            {
                type = TySimd128I4;
            }
            else
            {
                return false;
            }
            ToTypeSpecUse(instr, instr->GetSrc1(), this->currentBlock, *pSrc1Val, nullptr, type, IR::BailOutSimd128F4Only /*not used for Ld_A*/);
            TypeSpecializeSimd128Dst(type, instr, *pSrc1Val, *pSrc1Val, pDstVal);
            return true;
        }

        return false;

    case Js::OpCode::ExtendArg_A:

        if (Simd128DoTypeSpec(instr, *pSrc1Val, *pSrc2Val, *pDstVal))
        {
            Assert(instr->m_opcode == Js::OpCode::ExtendArg_A);
            Assert(instr->GetDst()->GetType() == TyVar);
            ValueType valueType = instr->GetDst()->GetValueType();

            // Type-spec src1 only based on dst type. Dst type is set by the inliner based on func signature.
            ToTypeSpecUse(instr, instr->GetSrc1(), this->currentBlock, *pSrc1Val, nullptr, GetIRTypeFromValueType(valueType), GetBailOutKindFromValueType(valueType), true /*lossy*/);
            ToVarRegOpnd(instr->GetDst()->AsRegOpnd(), this->currentBlock);
            return true;
        }
        return false;
    }

    if (!Js::IsSimd128Opcode(instr->m_opcode))
    {
        return false;
    }

    // Simd instr
    if (Simd128DoTypeSpec(instr, *pSrc1Val, *pSrc2Val, *pDstVal))
    {
        ThreadContext::SimdFuncSignature simdFuncSignature;
        instr->m_func->GetScriptContext()->GetThreadContext()->GetSimdFuncSignatureFromOpcode(instr->m_opcode, simdFuncSignature);
        // type-spec logic

        // special handling for load/store
        // OptArraySrc will type-spec the array and the index. We type-spec the value here.
        if (Js::IsSimd128Load(instr->m_opcode))
        {
            TypeSpecializeSimd128Dst(GetIRTypeFromValueType(simdFuncSignature.returnType), instr, nullptr, *pSrc1Val, pDstVal);
            Simd128SetIndirOpndType(instr->GetSrc1()->AsIndirOpnd(), instr->m_opcode);
            return true;
        }
        if (Js::IsSimd128Store(instr->m_opcode))
        {
            ToTypeSpecUse(instr, instr->GetSrc1(), this->currentBlock, *pSrc1Val, nullptr, GetIRTypeFromValueType(simdFuncSignature.args[2]), GetBailOutKindFromValueType(simdFuncSignature.args[2]));
            Simd128SetIndirOpndType(instr->GetDst()->AsIndirOpnd(), instr->m_opcode);
            return true;
        }

        // For op with ExtendArg. All sources are already type-specialized, just type-specialize dst
        if (simdFuncSignature.argCount <= 2)
        {
            Assert(instr->GetSrc1());
            ToTypeSpecUse(instr, instr->GetSrc1(), this->currentBlock, *pSrc1Val, nullptr, GetIRTypeFromValueType(simdFuncSignature.args[0]), GetBailOutKindFromValueType(simdFuncSignature.args[0]));

            if (instr->GetSrc2())
            {
                ToTypeSpecUse(instr, instr->GetSrc2(), this->currentBlock, *pSrc2Val, nullptr, GetIRTypeFromValueType(simdFuncSignature.args[1]), GetBailOutKindFromValueType(simdFuncSignature.args[1]));
            }
        }
        if (instr->GetDst())
        {
            TypeSpecializeSimd128Dst(GetIRTypeFromValueType(simdFuncSignature.returnType), instr, nullptr, *pSrc1Val, pDstVal);
        }
        return true;
    }
    else
    {
        // We didn't type-spec
        if (!IsLoopPrePass())
        {
            // Emit bailout if not loop prepass.
            // The inliner inserts bytecodeUses of original args after the instruction. Bailout is safe.
            IR::Instr * bailoutInstr = IR::BailOutInstr::New(Js::OpCode::BailOnNoSimdTypeSpec, IR::BailOutNoSimdTypeSpec, instr, instr->m_func);
            bailoutInstr->SetByteCodeOffset(instr);
            instr->InsertAfter(bailoutInstr);

            instr->m_opcode = Js::OpCode::Nop;
            if (instr->GetSrc1())
            {
                instr->FreeSrc1();
                if (instr->GetSrc2())
                {
                    instr->FreeSrc2();
                }
            }
            if (instr->GetDst())
            {
                instr->FreeDst();
            }

            if (this->byteCodeUses)
            {
                // All inlined SIMD ops have jitOptimizedReg srcs
                Assert(this->byteCodeUses->IsEmpty());
                JitAdelete(this->alloc, this->byteCodeUses);
                this->byteCodeUses = nullptr;
            }
            RemoveCodeAfterNoFallthroughInstr(bailoutInstr);
            return true;
        }
    }
    return false;
}
예제 #9
0
파일: Sym.cpp 프로젝트: Cellule/ChakraCore
intptr_t StackSym::GetLiteralConstValue_PostGlobOpt() const
{
    Assert(this->IsConst());
    IR::Instr *defInstr = this->m_instrDef;
    IR::Opnd *src1 = defInstr->GetSrc1();

    StackSym * stackSym = nullptr;

    if (src1->IsRegOpnd())
    {
        stackSym = src1->AsRegOpnd()->m_sym;
        if (stackSym->m_isEncodedConstant)
        {
            Assert(!stackSym->m_isSingleDef);
            Assert(LowererMD::IsAssign(defInstr) || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn);
            return stackSym->constantValue;
        }

        if (stackSym->m_isSingleDef)
        {
            //In ARM constant load is always legalized. Try to get the constant from src def
            defInstr = stackSym->m_instrDef;
            src1 = defInstr->GetSrc1();
        }
    }

    if (src1->IsAddrOpnd())
    {
        Assert(defInstr->m_opcode == Js::OpCode::Ld_A || defInstr->m_opcode == Js::OpCode::LdStr || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn || LowererMD::IsAssign(defInstr));
        return reinterpret_cast<intptr_t>(src1->AsAddrOpnd()->m_address);
    }
    if (src1->IsIntConstOpnd())
    {
        Assert(this->IsIntConst() || (stackSym && stackSym->IsIntConst()));
        if (defInstr->m_opcode == Js::OpCode::LdC_A_I4)
        {
            IR::AddrOpnd *const addrOpnd = IR::AddrOpnd::NewFromNumber(src1->AsIntConstOpnd()->GetValue(), defInstr->m_func);
            const Js::Var address = addrOpnd->m_address;

            // This is just to prevent creating multiple numbers when the sym is used multiple times. We can only do this
            // post-GlobOpt, as otherwise it violates some invariants assumed in GlobOpt.
            defInstr->ReplaceSrc1(addrOpnd);
            defInstr->m_opcode = Js::OpCode::Ld_A;
            return reinterpret_cast<intptr_t>(address);
        }
        Assert(defInstr->m_opcode == Js::OpCode::Ld_I4 || LowererMD::IsAssign(defInstr) || defInstr->m_opcode == Js::OpCode::ArgOut_A_InlineBuiltIn);
        return src1->AsIntConstOpnd()->GetValue();
    }
    if (src1->IsFloatConstOpnd())
    {
        Assert(this->IsFloatConst() || (stackSym && stackSym->IsFloatConst()));
        Assert(defInstr->m_opcode == Js::OpCode::LdC_A_R8);

        IR::AddrOpnd *const addrOpnd = src1->AsFloatConstOpnd()->GetAddrOpnd(defInstr->m_func);
        const Js::Var address = addrOpnd->m_address;

        // This is just to prevent creating multiple numbers when the sym is used multiple times. We can only do this
        // post-GlobOpt, as otherwise it violates some invariants assumed in GlobOpt.
        defInstr->ReplaceSrc1(addrOpnd);
        defInstr->m_opcode = Js::OpCode::Ld_A;
        return reinterpret_cast<intptr_t>(address);
    }

    AssertMsg(UNREACHED, "Unknown const value");
    return 0;
}